Like the title said I finally got the game off of steam. I noticed there is a few mods for it it and wondering if the steam version is modable and if so what's recommened out of the few mods that are for it.

Also any tips in general like builds, weapons, or about the game in general?

If the game is playing just fine without colour issues then it would seem Steam now comes with a patch. Could be because Bethesda now gets money from Steam sales.

I hope Timeslip and Killap [to name two], both got a check in the mail.

First tip: Believe it when they ask you to holster your weapon.
Second tip: The AI of party members cannot actually see the PC... so don't stand in front of them when they are attacking a target.
Likewise: Don't stand in a corner where they might box you in... There is no way to tell them to move.

Steal from party members; they don't go hostile. Unless Bethesda used the fan patches it's likely that there is no way to trade with party members without them demanding money for the items... This is why the developers made it impossible for them to go hostile if you steal from them.